If the 99% confidence interval for the average purchase of customers at a depart

Question

If the 99% confidence interval for the average purchase of customers at a department store is $40 to $120, then seo is a plausible value for the population mean at this level of confidence Choose the correct answer below. OA. O B. C. The statement is true. The statement is false. The confidence interval must be 100% to make $80 a plausible value for the population mean. The statement is false. The lower limit of the interval must be greater than $80 to make it a plausible value for the population mean O D. The statement is false. The upper limit of the interval must be less than $80 to make it a plausible value for the population mean.

Explanation / Answer

The 99% confidence interval for the mean is $40 to $ 120

Here , the population mean is $80

If the value of the population mean is lies in the given confidance interval , then accept the null hypothesis .

Here , the population mean $80is lies in the given confidence interval ( $40 , $120 )

Hence , the given statement is true.

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